The ornamental design for a handset, as shown and described.
FIG. 1 is a perspective front view of a handset showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a perspective top front view thereof;
FIG. 7 is a perspective bottom left front view thereof; and,
FIG. 8 is an enlarged view of the region demarcated by uneven-length broken lines of FIG. 1.
The uneven-length broken lines represent unclaimed boundaries of the design. The even-length broken lines of the handset are for environmental purposes only and form no part of the claimed design.